Finding the Fourth Proportional to 1,370,258,657.49, 1,890,952,179.26 and 743,727,083.79
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Solution
The fourth proportional to 1,370,258,657.49, 1,890,952,179.26 and 743,727,083.79 is: 1,026,340,787.69
Step by Step Solution
- Step 1: Write the proportion equation
1,370,258,657.49 : 1,890,952,179.26 = 743,727,083.79 : x - Step 2: Convert to fraction form
1,370,258,657.49/1,890,952,179.26 = 743,727,083.79/x - Step 3: Cross multiply
1,370,258,657.49x = 1,890,952,179.26 × 743,727,083.79 - Step 4: Simplify right side
1,370,258,657.49x = 1,406,352,349,863,666,432 - Step 5: Solve for x
x = 1,406,352,349,863,666,432/1,370,258,657.49 - Step 6: Final answer
x = 1,026,340,787.69
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.